203 人工心臓用磁気軸受の最適設計(ライフサポートにおける工学技術)

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We have developed the magnetically suspended artificial hearts with a diagonal-flow pump. The magnetic bearing for this pump has consists of four stators, for permanent magnets and a rotor. In this study, optimal design method of the magnetic bearing for diagonal-flow blood pump has been developed. This method includes the genetic algorithm(GA), which based on the evolution of living organisms. In this paper, three types of magnetic bearing that have different target attractive force is designed with the proposed method. Size of the designed magnetic bearing were 48×60[mm], 60×69[mm], 77×76[mm], respectively. Optimal design solutions that minimize the power consumption could be obtained. As a next step, the suitable model will be defined by using the finite element method